trouble with alpha channel on psp X

well, the title says it all... Ive recently picked up psp X and tried my hand at designing my first shirt, but for some reason i cant get the alpha channel to save through to the .tga file. If anyone can help, please.... im getting frustrated
Thanks

In this same forum.. look up at the "sticky note". Chosen few has given directions to this question. If you are still stuck after reading it, message me in world. I'll try to help you out.

thanks milady, with a little work ive managed to figure it out on my own...
for anyone else with this prob, make sure when you go to save mask to alpha channel, you must enter "Alpha Channel 1" into the name or else it wont work...